WARNING: FOR YOUR SAFETY, DO NOT EVER WEAR A JEWEL BEARING A BLOOD TYPE WHICH DOES NOT CORRESPOND TO YOURS

Although the greatest care has been taken in drafting the information provided in this web-site, Matta Ari SRLs assumes no direct or indirect responsibility for such information: the suitability or exclusion from donating blood is only subject to a doctor’s evaluation, who will judge the feasibility; before any blood transfusion, a test is carried out in hospital in accordance with the laws and regulations in force, in all countries in the world.

b type jewels collections resumes and brings forth the authentic heritage of Italian jewelry, made in precious and carefully selected metals and stones. b type jewels are made to be worn every day and on every occasion, nonetheless, being precious objects, they deserve some simple, caring actions so that their beauty and splendour can be preserved over time.

A jewel worn every day with care will only occasionally need exceptional maintenance, especially if it is delicately cleaned from time to time and put away appropriately. Normal everyday use and external agents such as atmospheric agents, cosmetic products, moisture and transpiration coming into contact with jewels may lead to reducing the lustre of gemstones and diamonds, as well as of gold surfaces. The lustre of jewels, especially gold jewels (without gemstones or diamonds) can be maintained in a simple way using specific, non-abrasive products specially meant for cleaning jewellery. Most products available on the market for jewellery cleaning may be used safely, as long as properly applied. It is advisable to take extra care with products containing ammonia, alcohol, acids or chemical substances that may prove to be too aggressive.

Jewels in white gold may tend with time to turn yellow. It is a well-known phenomenon, characteristic of white gold alloys, that in some cases may be accelerated by reactions to external agents. However, since it is only on the surface, it can be avoided or easily overcome by periodical cleaning with purpose-made products.

Sandblasting, like rhodium-plating, is a surface finish that tends to alter with wearing. Sandblasting, in particular, is a treatment that enhances the superficial roughness of objects, creating peaks and troughs that can be seen and felt when touching. Wearing a jewel will tend to smooth out these peaks and troughs over time, and the surface becomes more glossy. However, the sandblasted finish can be easily restored.

For all of its jewels, b type chooses exclusively natural gemstones carefully selected by expert gemmologists according to strict quality standards that b type applies as a guarantee to its products. Gemstones traditionally used in jewellery generally have a high hardness index, but it goes without saying that, as hard as a gemstone may be, it is not necessarily indestructible, and a gemstone set in an item of jewellery will still be delicate. Even small knocks, though not deliberate or direct, may scratch or chip a gemstone.

Natural stones do not need any particular treatment or maintenance but, being delicate, they must be properly cared of to avoid knocks that may chip or break them, as well as contact with external agents that may attack them. A good rule of thumb would be to avoid contact with cosmetic products, fragrances, soaps, detergents, chlorine or chlorinated water, prolonged exposure to the sun, proximity to heat sources and sudden changes in temperature that may damage the surface of a gemstone irreversibly.

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